#177D8E
Closest named color: Ocean (#017B92). oklch(54.3% 0.089 212.2), rgb(23, 125, 142).
Aa
White text reads best on this color (4.81:1).
About this color
#177D8E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.089 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.012 away. White text reads best on it, at 4.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #177D8E |
| RGB | rgb(23, 125, 142) |
| HSL | hsl(189, 72%, 32%) |
| OKLCH | oklch(54.3% 0.089 212.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #177D8E | 4.81:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #177D8E | 4.36:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #177D8E text on white | 4.81:1 | AA | Lc 73.0 | Content text, not long reading |
| #177D8E text on black | 4.36:1 | AA large text | Lc -28.7 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A4C8D0
oklch(80.9% 0.04 212.7)
-
Step 400
400
#70ACB8
oklch(70.8% 0.064 211.6)
-
Step 500
500
#4597A7
oklch(63.2% 0.083 212.3)
-
Step 600
600 (this color)
#177D8E
oklch(54.3% 0.089 212.2)
-
Step 700
700
#0B6D7C
oklch(49.2% 0.083 211.7)
-
Step 800
800
#115965
oklch(42.8% 0.069 211.8)
-
Step 900
900
#184952
oklch(37.7% 0.054 211.9)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#177D8E with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #70788F | 0.082 |
| Deuteranopia (no green cones) | #606D8E | 0.074 |
| Tritanopia (no blue cones) | #008482 | 0.033 |
| Achromatopsia (no color) | #727272 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #177D8E
#177D8E
oklch(54.3% 0.089 212.2)
- #9D5B4E
#9D5B4E
oklch(54.3% 0.09 32)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #177D8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.012
- Deep Aqua #08787F ΔE 0.027
- Teal #008080 ΔE 0.028
- Sea Blue #047495 ΔE 0.034
- Bluegreen #017A79 ΔE 0.034
- Teal Blue #01889F ΔE 0.036
- Cerulean #457B9D ΔE 0.042
- Dark Cyan #008B8B ΔE 0.045
Use #177D8E in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.